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0.2 g (0.001 mole) of <strong>[125652-55-3]1-butyl-3-methylpyridinium chloride</strong> was dissolved in 10 g of water, and 150 mul / min of sodium octanoate (0.001 mole) was dissolved in 10 g of water to make 150 mul / min. A microreactor controlled at 80 C was connected to a silander pump I sent it away. The solution passed through the microreactor was collected and concentrated under reduced pressure to obtain 1-butyl- To obtain 0.279 g (96%) of 3-methylpyridinium octanoate. The analysis results of the obtained ionic liquid are as follows